In a synthesis reaction, what happens to the energy?

In a synthesis reaction, energy is stored in the bonds of the newly formed molecules. During this type of reaction, simpler reactants combine to form a more complex product. The process involves the formation of chemical bonds, which requires energy input to overcome existing bond energies in the reactants.

This energy does not just vanish; rather, it becomes potential energy that is stored in the newly created chemical bonds of the product. The energy stored in these bonds can later be released during other chemical reactions, such as decomposition or combustion, where it can be harnessed for work.

The other options do not accurately describe what occurs in a synthesis reaction. Energy consumption, while necessary for bond formation, does not imply that energy is outright absorbed without consequences; instead, it is about transforming energy forms and storing it chemically. Energy release does not occur in this process, and the conversion to a gas is not relevant to the general nature of synthesis reactions.